Abstract: A padlock includes a shackle having a channel disposed along an axis of the shackle. The padlock also has a plurality of dials each having a single detent. The shackle can also include a plurality of circumferential grooves formed in a spaced arrangement along the shackle, each groove corresponding to one of the dials.

Abstract: A combination lock comprises a bolt which is withdrawn by depressing a bolt pin which is shielded by rotating discs having a movable disc pin within them. A selector pin attached to a dial is provided for engaging in selector holes in the discs and aligning the disc pins with one another and with the bolt pin, with provision for pushing inwardly the disc pin on the outer disc and urging the other disc pins aligned therewith towards the bolt pin such that it is depressed and/or withdrawn. The discs have a weight attached at their circumference such that, during code setting, changing the position of the weight changes the relative angular position of the disc pin. When pressure is released from the mechanism, springs return the selector pin and the disc pins to their original positions and the weights on the discs fall, thereby rotating the discs and automatically scrambling the code.

Abstract: A self-scrambling combination includes a frame that supports at least two tumbler rings and an activating slide. The tumbler rings are marked with characters used for a combination for the lock. The lock is openable only when the tumbler rings are located in an open position related to the combination. The activating slide moves a locking bar between a locked position and an unlocked position. A scrambling mechanism is attached to the activating slide and rotates the tumbler rings from the open position to another position upon movement of the activating slide to move the locking bar from the unlocked position to the locked position. The frame can be used as the door of a lockbox and an attached key lock controls the setting of the combination for the lock. The self-scrambling combination lock can be used for a briefcase or valise lock with an additional spring closing the lock.

Abstract: A combination lock comprises a bolt which is withdrawn by depressing a bolt pin which is shielded by rotating discs having a movable disc pin within them. A selector pin attached to dial means is provided for engaging in selector holes in the discs and aligning the disc pins with one another and with the bolt pin, means being provided for pushing inwardly the disc pin on the outer disc and urging the other disc pins aligned therewith towards the bolt pin such that it is depressed and/or withdrawn. The discs have a weight attached at their circumference such that, during code setting, changing the position of the weight changes the relative angular position of the disc pin. When pressure is released from the mechanism, springs return the selector pin and the disc pins to their original positions and the weights on the discs fall, thereby rotating the discs and automatically scrambling the code.

Abstract: A combination lock includes a female member, a lock rod inserted in the female member; the female member is inserted through single dial, several actuating rings, and co-moving rings; the dial and the actuating rings are arranged side by side, and releaseably engaged with respective co-moving rings; the dial and an actuating ring adjacent thereto have a projecting portion on opposing sides while every two adjacent actuating rings have a projecting portion on opposing sides such that the co-moving rings can be turned to unlocking position where all gaps thereof oppose a trench of the female member to form a passage for the lock rod by operating the dial; orientations of the dial and the actuating rings relative to respective co-moving rings are changed for changing the unlocking combination by operating the dial after the dial and the actuating rings are disengaged from the co-moving rings.

Abstract: Although a door locking handle assembly is small as a whole in thickness in construction, it permits, through its computerized personal management system, a large number of persons or users to have easily and quickly access to their instruments contained in a box provided with the door locking handle assembly. In this assembly, a combination lock (19), which is opened by turning each of a set of its specially marked dial discs (22) a given number of times to establish a unique combination of marks of the dial discs (22), is incorporated in a door handle (13) or in a base body (1). In operation, a locking member (24) of the assembly prevents the door handle (13) from being pulled out of the base body (1), and is driven to reach its unlocked position when the combination lock (19) is opened.

Abstract: A closing device for a lock, comprising a pivoting bolt that can be closed in a forward and retracted position with the aid of a locking means. The invented device also comprises a closing element (13) that accommodates the bolt in a forward close position and a locking and unlocking device for said bolt. The locking and unlocking device comprises at least one locking element (17, 18) that can be moved forwards into the movement area of the bolt or retracted, whereby the pivoting bolt is secured in a forward position against closure in a retracted position or retracting from the forward close position. When in a locked position, mechanical door-side interventions on the locking mechanism of the locking cylinder or the pivoting bolt-lock do not result in a closing movement of said bolt.

Abstract: Disclosed is a portable combination lock having a reset button extension member, the lock having an elongated outer case that encloses lock mechanism including several spaced-apart numbered dials rotatably mounted on a longitudinally extending shaft assembly. A latch is mounted to the front end of the case and one end of the shaft assembly is adapted to shift axially to lock and unlock the latch. The other end of the shaft assembly is depressible in an axial direction against spring force when the combination is set to unlock the mechanism, to allow the lock combination to be reset as desired. The extension member has a first end mounted to the rear end of the case, and it extends longitudinally from the case to its distal end. The lock can be held by its case and the distal end of the extension member pressed against an immovable surface to cause a forward portion of the extension member to engage and operate the depressible end of the shaft assembly.

Abstract: A combination lock comprises a lock seat, a dial set, a sliding seat, a lock tongue, a resilient block, a lock seat cover, and a shackle having a movable end and a fixed end. When the dial set is turned to a set series of numbers to work the mechanism that opens the lock, the stopping rod of the dial set is not obstructed by the dial so as to enable the fixed end of the shackle to actuate the sliding seat. The movement of the sliding seat can bring about the displacement of the lock tongue without obstructing the movable end of the shackle, thereby enabling the movable end of the shackle to be ejected by the resilient block. When the set series of numbers is disturbed, the stopping rod of the dial set remains stationary such that the sliding set is urged by the stopping rod, and that the sliding seat can not be moved by the fixed end of the shackle.

Abstract: A high security gun lock device is disclosed which has an elongate gripping and locking assembly that is inserted into the muzzle end of the barrel of a revolver or pistol type hand gun and which is then connected to a dummy round located in a cylinder chamber of the revolver or the firing chamber of the pistol. The dummy round has a bulbous head which is grasped by a plurality of expandable gripping fingers mounted on the inner end of the gripping and locking assembly to lock the latter to the former. An axially slidable actuating mechanism is manually operable to cause the gripping fingers to release the bulbous head of the bullet, and a spring biased interposer is normally operable to prevent movement of the actuating mechanism until a locking mechanism is set to a predetermined condition to permit operation of the interposer.

Abstract: An electronic door lock is provided with a single control knob used for entering a predetermined combination through manipulation of the knob in a first arc of rotation, the code being entered by pushing the dial inwardly to bring a push pad into contact with individual ones of an arcuate array of electrical switches provided on a printed circuit board within the lock dead housing, the release of the door locking bolt being accomplished after entry of the predetermined code by further manipulation of the control knob through remaining portions of knob rotation which are unavailable until after entry of the predetermined code. A digitally operated code input pad assembly is also provided to enter such code and a second code to open a second lock mechanism associated with the door spring bolt giving two levels of security for the human passage door.

Abstract: An electronic door lock is provided with a single control knob used for entering a predetermined combination through manipulation of the knob in a first arc of rotation, the code being entered by pushing the dial inwardly to bring a push pad into contact with individual ones of an arcuate array of electrical switches provided on a printed circuit board within the lock housing, the release of the door locking bolt being accomplished after entry of the predetermined code by further manipulation of the control knob through remaining portions of knob rotation which are unavailable until after entry of the predetermined code.

Abstract: A combination cylinder lock having coding elements constituted by the combination of outer rings having notches suitable for receiving a locking member disposed between a rotor and a stator, in combination with coding disks having drive members enabling the combination to be decoded. The outer rings and the corresponding central disks are mutually declutchable in order to enble automatic combination changing.

Abstract: A combination lock having two or more disks and a cam which includes a drive pin for driving an adjacent disk which, in turn, drives the next disk. The disks have pins adapted to be received in apertures in two or more disks, known as wheel gates, the disks and the cam can be moved inwardly. In this position, a notch on the cam engages a nose on a drop lever which is in turn connected to the locking bolt. Rotation of the cam in one direction will then move the bolt to the unlocked position.

Abstract: In an electronic digital safe lock including a slide plate pivotally connected by an articulated linkage to a bolt operating lever for retracting safe door locking bolts after digital input of the electronic lock combination, a lock override is provided which includes a dial operated mechanical combination lock having a linkage pivotally interconnecting the manual combination lock bolt with the electronic lock articulated linkage of the slide plate and bolt operating lever. When the electronic lock is locked, i.e., the slide plate is immovable, the manual combination lock can be manipulated to operate the aritculated linkage to operate the bolt operating lever independent of movement of the slide plate.

Abstract: A combination lock has an array of combination elements that are each movable between first and second positions. Each element 25 has to be in a preselected one of the two positions for the lock to open, and the combination is entered by either moving or not moving each element from an intial or reset position. Then a reader 30 adjacent the elements 25 is simultaneously moved against all the elements to test their positions. Any element not in the proper position blocks the reader from movement; but if all the elements are in their preselected positions, they allow the reader to move and the lock to open. Combination elements 25 are preferably arranged concentrically around a spindle 15 having an external knob 16 that can rotate and move the spindle axially. Each of the elements 25 is preferably a slidable plate with an eccentric notch 26 that confronts and overlaps with a radial notch in reader 30.

Abstract: A combination lock having a plurality of rotatable tumblers, a knob for positioning the tumblers, a bolt, a bolt cam for operating the bolt to unlock the lock upon proper positioning of the rotatable tumblers by proper clockwise and counter-clockwise rotation of the knob, and locking means for preventing said bolt cam from operating the bolt prior to proper positioning of the rotatable tumblers. According to a preferred embodiment the locking means includes a floating pin unconnected to any structure but moveable within the lock structure between positions preventing and permitting movement of the bolt cam and the knob is longitudinally moveable to engage the bolt cam for operation of the bolt.

Abstract: A combination lock comprising at least two coaxially arranged elongate members, first and second rotatable combination dial members for each elongate member, an abutment member on each elongate member, a bolt which is adapted to slide backwards and forwards in the direction of alignment of the elongate members, and a bolt-operating member, each first combination dial member being fixed to its elongate member and each second combination dial member being rotatable with respect to its elongate member, and each second combination dial member having a central aperture for receiving the elongate member and a slot for receiving the abutment member, the combination lock being such that when the code set on all the second rotatable combination dial members agrees with the code set on all the first rotatable combination dial members each abutment member can move into the slot on its second combination dial member to allow each elongate member to move through its second member for allowing withdrawal of the bolt, and t

Abstract: A direct dial combination lock having tumblers which are cammed in reciprocating movement by rotation of a driver and which, once set, are disengaged by shifting the driver axially. Each tumbler has an internal cam track that is operated on by rotation of the driver to establish a reciprocating or back and forth tumbler motion. Gates presented on the respective tumblers receive individual combs that are movable as a set toward the tumblers in a direction perpendicular to the direction of tumbler back and forth movement. The combs are scrambled for greater manipulation resistance, and their positions relative to one another are changeable without opening the lock, to change the combination.

Abstract: A combination lock having a box inside which is located a sliding latch having a ratchet operated by a pinion operated from outside. The pinion being slidable to enter a round hole in a plurality of rotating members operating as a coding device, the pinion being adapted to rotate only when it is in said round holes. The combination members have the remaining holes of a section that blocks the pinion rotation so that only when all the combination members offer their circular holes is possible to rotate the pinion and so operate the latch.

Abstract: A dial type combination lock having a plurality of individual locking units each of which consists of a locking means and a dial means. The locking means has a pair of discs, one of which is a leading disc in which are a plurality of the holes at locations coinciding with the numbers displayed on the number carrying portion of the dial, and the other of which is the locking disc having a locking bolt receiving notch therein and a pin that is to be fit into one of the holes corresponding a designated number. The locking disc of each locking unit is connected with the leading disc thereof by the pin on the locking disc engaging in the hole in the leading disc corresponding with the designated number for the respective locking member and connecting shafts connect all the locking means to the dial means, so that during the operation of the lock, the locking bolt receiving notches in each of the locking discs are individually set in the bolt receiving position.

Abstract: Combination lock for the control of the retraction of a lock latch comprising a multiplicity of notched members each displaceable as a function of a numeral or number in the combination, in order that, upon display of the right combination, the notches are aligned with a device for retracting the latch, characterized in that said device comprises means such that, by acting on a same member for instance a button, in a first phase the rake can be moved towards engagement with the notches then aligned, and in a second phase the driving of the latch in a retraction movement can be ensured.

Abstract: A replacement plug adapted to substitute a key operated plug and tumblers in an existing tumbler lock without extensive modification of an existing installation in a door, thereby reducing the possibility of mechanical picking of the tumblers which are thereby eliminated. The combination tumblers are disposed for rotation about an axis disposed at right angles relative to the axis of rotation of an actuating knob, which is mounted on an axially shiftable shaft. Selection of the proper combination frees the shaft for axially outward movement whereby a lock opening means is connected to the, actuating knob for the transmission of rotating motion to a lock bolt or other locking structure.

Abstract: A combination lock has a plurality of gated tumbler wheels mounted for rotation relative to a gate entering bar portion of a release lever, blocking a release movement of such lever until gate openings on the tumbler wheels are aligned to said bar and a tumbler locator and lever arm actuator member mounted for both axial and rotative movement relative the axis of rotation of the tumbler wheels. The member has a drive pin engaging, and successively releasable from, drive apertures divided in the tumbler wheels to allow rotation of the tumbler wheels upon rotation of the member and sequential release of located tumbler wheels upon an axial movement of said member relative to said tumbler wheels.

Abstract: A combination lock of the exposed shackle type is disclosed. The shackle is held in its locked position by locking means that are released when a fence member is moved into gates located in the periphery of two tumbler wheels. The tumbler wheels are positioned for the gates to receive the fence by a dial and keyed shaft, after which the key is moved axially of the shaft out of driving connection with the tumbler wheels and into driving connection with the fence means. Rotation of the dial moves the fence means to release the shackle. The tumbler wheels have a rim and hub that are connected through a friction clutch type connection to allow the rim to be held while the hub is rotated. This allows the combination of the lock to be changed, when the lock is open, by actuating a lever mounted externally on the side of the lock housing that holds the fence means in engagement with the gates in the periphery of the tumbler wheels while the hubs are rotated by the dial.